windows 2003 sp1 bug in file sharing

I guess by default in Windows 2003 SP1, you must use the actual server name when connecting to it via SMB.  In other words, you can't use a dns CNAME record to connect to that box's shares unless you do the following registry change:

http://www.intelliadmin.com/blog/2006/01/cname-sharing-disabled-in-windows-2003.html